我正在尝试制作一台可乐机，但这并不是没有问题。
每次发生按钮点击事件时，我希望重新运行一个特定的代码块。我怎么能这样做？
这是我的完整代码：
using System;
using System.Windows.Forms;
using System.Drawing;
namespace QuickSharp
{
public class CokeMachine
{
public Button Coke = new Button();
public Button Sprite = new Button();
public Button Fanta = new Button();
public Button RedBull = new Button();
public Button Juice = new Button();
public Button Water = new Button();
double CokeCost = 1.00;
double SpriteCost = 1.00;
double FantaCost = 1.00;
double RedBullCost = 2.50;
double JuiceCost = 2.00;
double WaterCost = 0.50;
public Button Coin1 = new Button();
public Button Coin2 = new Button();
public Button Coin3 = new Button();
public Button Coin4 = new Button();
public Button Coin5 = new Button();
public Button Coin6 = new Button();
double CoinAmount1 = 0.05;
double CoinAmount2 = 0.10;
double CoinAmount3 = 0.20;
double CoinAmount4 = 0.50;
double CoinAmount5 = 1.00;
double CoinAmount6 = 2.00;
public double TotalInsertedCoins = 0;
//EventHandlers for drink buttons
public void DrinkButtonEvents()
{
Coke.Click += new EventHandler(Coke_ClickHandler);
Sprite.Click += new EventHandler(Sprite_ClickHandler);
Fanta.Click += new EventHandler(Fanta_ClickHandler);
RedBull.Click += new EventHandler(RedBull_ClickHandler);
Juice.Click += new EventHandler(Juice_ClickHandler);
Water.Click += new EventHandler(Water_ClickHandler);
}
//Drink buttons - Click event handlers
public void Coke_ClickHandler(object sender, EventArgs e)
{
if(TotalInsertedCoins >= CokeCost)
{
DispenseDrink("Coca-Cola" , CokeCost);
}
else
{
MessageBox.Show("You have not inserted enough money to buy this drink." , "Warning");
}
}
public void Sprite_ClickHandler(object sender, EventArgs e)
{
if(TotalInsertedCoins >= SpriteCost)
{
DispenseDrink("Sprite" , SpriteCost);
}
else
{
MessageBox.Show("You have not inserted enough money to buy this drink." , "Warning");
}
}
public void Fanta_ClickHandler(object sender, EventArgs e)
{
if(TotalInsertedCoins >= FantaCost)
{
DispenseDrink("Fanta" , FantaCost);
}
else
{
MessageBox.Show("You have not inserted enough money to buy this drink." , "Warning");
}
}
public void RedBull_ClickHandler(object sender, EventArgs e)
{
if(TotalInsertedCoins >= RedBullCost)
{
DispenseDrink("Red Bull" , RedBullCost);
}
else
{
MessageBox.Show("You have not inserted enough money to buy this drink." , "Warning");
}
}
public void Juice_ClickHandler(object sender, EventArgs e)
{
if(TotalInsertedCoins >= JuiceCost)
{
DispenseDrink("Orange Juice" , JuiceCost);
}
else
{
MessageBox.Show("You have not inserted enough money to buy this drink." , "Warning");
}
}
public void Water_ClickHandler(object sender, EventArgs e)
{
if(TotalInsertedCoins >= WaterCost)
{
DispenseDrink("Water" , WaterCost);
}
else
{
MessageBox.Show("You have not inserted enough money to buy this drink." , "Warning");
}
}
//EventHandlers for money buttons
public void MoneyButtonEvents()
{
Coin1.Click += new EventHandler(Coin1_ClickHandler);
Coin2.Click += new EventHandler(Coin2_ClickHandler);
Coin3.Click += new EventHandler(Coin3_ClickHandler);
Coin4.Click += new EventHandler(Coin4_ClickHandler);
Coin5.Click += new EventHandler(Coin5_ClickHandler);
Coin6.Click += new EventHandler(Coin6_ClickHandler);
}
//Money buttons - Click event handlers
public void Coin1_ClickHandler(object sender, EventArgs e)
{
TotalInsertedCoins += CoinAmount1;
}
public void Coin2_ClickHandler(object sender, EventArgs e)
{
TotalInsertedCoins += CoinAmount2;
}
public void Coin3_ClickHandler(object sender, EventArgs e)
{
TotalInsertedCoins += CoinAmount3;
}
public void Coin4_ClickHandler(object sender, EventArgs e)
{
TotalInsertedCoins += CoinAmount4;
}
public void Coin5_ClickHandler(object sender, EventArgs e)
{
TotalInsertedCoins += CoinAmount5;
}
public void Coin6_ClickHandler(object sender, EventArgs e)
{
TotalInsertedCoins += CoinAmount6;
}
private void DispenseDrink(string drink , double cost)
{
if(TotalInsertedCoins - cost == 0.0)
{
MessageBox.Show("Enjoy your " + drink + "!");
TotalInsertedCoins = 0.0;
}
else
{
MessageBox.Show("Enjoy your " + drink + "! Here is your change: €" + (TotalInsertedCoins - cost));
TotalInsertedCoins = 0.0;
}
}
public CokeMachine()
{
MoneyButtonEvents();
DrinkButtonEvents();
}
}
public class CokeForm : Form
{
public CokeForm()
{
CokeMachine Machine = new CokeMachine();
// General aspect of machine
this.Text = "Cola Machine";
this.Size = new Size(450 , 500);
Label Header;
Header = new Label();
Header.Text = "Coca-Cola Machine";
Header.Font = new Font("Arial" , Header.Font.Size +5);
Header.ForeColor = Color.DarkRed;
Header.Location = new Point(132, 20);
Header.AutoSize = true;
this.Controls.Add(Header);
TextBox TextBox1 ;
TextBox1 = new TextBox();
TextBox1.BackColor = Color.Black;
TextBox1.ForeColor = Color.Red;
TextBox1.Font = new Font("Arial" , TextBox1.Font.Size +3);
TextBox1.ReadOnly = true;
TextBox1.Size = new Size(210,300);
TextBox1.Location = new Point(112,50);
int tester = 0;
if(Machine.TotalInsertedCoins == 0.05){tester = 1;}
if(Machine.TotalInsertedCoins > 0.05){tester = 2;}
else{tester = 0;}
switch(tester)
{
case 1:
TextBox1.Text = "Inserted Coins: €" + Machine.TotalInsertedCoins;
break;
case 2:
TextBox1.Text = "Inserted Coins: €" + Machine.TotalInsertedCoins + "0";
break;
default:
TextBox1.Text = "Buy Your Ice Cold Drinks Here!";
break;
}
/*
Previous Attempt:
if(Machine.TotalInsertedCoins == 0.00)
{
TextBox1.Text = "Buy Your Ice Cold Drinks Here!";
}
else
{
TextBox1.Text = "Inserted Coins: €" + Machine.TotalInsertedCoins;
}
*/
this.Controls.Add(TextBox1);
// Money aspect of machine
Label Money;
Money = new Label();
Money.Text = "Insert Coins Here:";
Money.Location = new Point(20, 100);
this.Controls.Add(Money);
//Money buttons
Machine.Coin1.Text = "Insert €0.05";
Machine.Coin1.Location = new Point(28, 125);
this.Controls.Add(Machine.Coin1);
Machine.Coin2.Text = "Insert €0.10";
Machine.Coin2.Location = new Point(28, 165);
this.Controls.Add(Machine.Coin2);
Machine.Coin3.Text = "Insert €0.20";
Machine.Coin3.Location = new Point(28, 205);
this.Controls.Add(Machine.Coin3);
Machine.Coin4.Text = "Insert €0.50";
Machine.Coin4.Location = new Point(28, 245);
this.Controls.Add(Machine.Coin4);
Machine.Coin5.Text = "Insert €1.00";
Machine.Coin5.Location = new Point(28, 285);
this.Controls.Add(Machine.Coin5);
Machine.Coin6.Text = "Insert €2.00";
Machine.Coin6.Location = new Point(28, 325);
this.Controls.Add(Machine.Coin6);
// Drink aspect of machine
Label Drinks;
Drinks = new Label();
Drinks.Text = "Choose Your Drink:";
Drinks.Location = new Point(315 , 100);
Drinks.AutoSize = true;
this.Controls.Add(Drinks);
//Drink buttons
Machine.Coke.Text = "Coca-Cola (€1.00)";
Machine.Coke.Location = new Point(315, 125);
Machine.Coke.AutoSize = true;
this.Controls.Add(Machine.Coke);
Machine.Sprite.Text = "Sprite (€1.00)";
Machine.Sprite.Location = new Point(315, 165);
Machine.Sprite.AutoSize = true;
this.Controls.Add(Machine.Sprite);
Machine.Fanta.Text = "Fanta (€1.00)";
Machine.Fanta.Location = new Point(315, 205);
Machine.Fanta.AutoSize = true;
this.Controls.Add(Machine.Fanta);
Machine.RedBull.Text = "Red Bull (€2.50)";
Machine.RedBull.Location = new Point(315, 245);
Machine.RedBull.AutoSize = true;
this.Controls.Add(Machine.RedBull);
Machine.Juice.Text = "Fruit Juice (€2.00)";
Machine.Juice.Location = new Point(315, 285);
Machine.Juice.AutoSize = true;
this.Controls.Add(Machine.Juice);
Machine.Water.Text = "Water (€0.50)";
Machine.Water.Location = new Point(315, 325);
Machine.Water.AutoSize = true;
this.Controls.Add(Machine.Water);
}
}
public class Test
{
public static void Main()
{
CokeForm ColaForm;
ColaForm = new CokeForm();
Application.Run(ColaForm);
}
}
}
现在每次按下一个Coin按钮，我都希望重新运行这个部分：
int tester = 0;
if(Machine.TotalInsertedCoins == 0.05){tester = 1;}
if(Machine.TotalInsertedCoins > 0.05){tester = 2;}
else{tester = 0;}
switch(tester)
{
case 1:
TextBox1.Text = "Inserted Coins: €" + Machine.TotalInsertedCoins;
break;
case 2:
TextBox1.Text = "Inserted Coins: €" + Machine.TotalInsertedCoins + "0";
break;
default:
TextBox1.Text = "Buy Your Ice Cold Drinks Here!";
break;
}
这样，可乐机的显示就会显示您插入了多少钱。
提前致谢！
答案 0 :(得分：3)
然后你应该把这段代码放到一个单独的方法中并在你需要的地方调用它。
答案 1 :(得分：1)
将您需要重新运行的部分重构为公共方法
public void CoinInserted(object sender, EventArgs e)
{
int tester = 0;
if (Machine.TotalInsertedCoins == 0.05) { tester = 1; }
if (Machine.TotalInsertedCoins > 0.05) { tester = 2; }
switch (tester)
{
case 1:
TextBox1.Text = "Inserted Coins: €" + Machine.TotalInsertedCoins;
break;
case 2:
TextBox1.Text = "Inserted Coins: €" + Machine.TotalInsertedCoins + "0";
break;
default:
TextBox1.Text = "Buy Your Ice Cold Drinks Here!";
break;
}
}
将cokemachine和textbox1移出cokeform构造函数
public partial class CokeForm : Form
{
CokeMachine Machine = new CokeMachine();
TextBox TextBox1;
public CokeForm()
{
...
}
在cokeform构造函数中，添加以下代码
Machine.Coin1.Click += new EventHandler(CoinInserted);
Machine.Coin2.Click += new EventHandler(CoinInserted);
Machine.Coin3.Click += new EventHandler(CoinInserted);
Machine.Coin4.Click += new EventHandler(CoinInserted);
Machine.Coin5.Click += new EventHandler(CoinInserted);
Machine.Coin6.Click += new EventHandler(CoinInserted);
CoinInserted(this, null);